Machine for cutting watch-wheels



llll

(No Model.) a sheets-sheet 1. P. E. JEANJAQUET. MACHINE PCH CUTTING WATCH WHEELS. Y No. 275,494. Patented Apr. 10,1883.

\(((("I)))). l/ I l L" 1 Y /l #l Q; s C 'h l v "`f\| In H *C j. XMK Q7/w f ,y/57H7@ N. mins. mmnlnpm. www n. c.

(No Model.)

3 Seets-Sheet 2.

F. E. JBANJAQUET. yls/LAGHINE For; CUTTING VWATCH WHEELS. No. 275,494.

Patented Apr. 10,1883.

nu. washington D. C.

im Model.) s sheets-sheet 3.

F.,E.JEANJAQUET.

MACHINE PoR UUTTING WATCH WHEELS. Y "NoQ 275,494.l Patented Apr. 10,1883.

mlfmuumlnllllllllm- /@MMW f @f/W N. PETEn Fmmumolnpmr. vlamingen. D.C.

y l UNITED STATES F. EUGENE JEAIIJAQUET,

PATENT OFFICE.

oEDECrEoIT, MICHIGAN.'

MACHINE FoR CUTTING WATCH-WHEELS.

l lSPEGIFIATTON vforming part of Letters Patent No. 275,494, dated April 10, 1883.

Application tiled November 25, 1881. Renewed December 1, 1882. (No model.)

To all whom @t may concern:

Be it known that I, F. EUGNE JEANJA- QUET,`o f Detroit, Wayne county, Michigan, have invented an Improvement in Machines for Cutting and Recutting Watch-Gear, of which the following is a specification.

The nature ot' my invention relates'to that class of gear-cutting machines ordinarily styled watchfgear-cutting machines. In machines of this class great and various adj ustability of the parts is needed to adapt it to perform its work upon the manifold sizes and kinds of gear used in watch-making, and it is also-of like importance to adapt the parts to which the work is secured during the operation to hold properly any kind or size of blank or gearwheel without vthe use of numerous or complicated chucks or similar devices, and the improvements on my machine are designed with special reference to these points, all as fully hereinafter set forth, and specifically pointed out in the claims.

In the drawings which form apart of t-his specification, Figure l is a` vertical central longitudinal section of my machine. Fig.'2 is a view in elevation. Fig. 3 is a plan. Figs. 4, 5, and 6 illustrate the Inode of securing different blanks or gear-wheels for operation. In the drawings, A is the bed of my Inachine, which may be either mounted upon a permanent support or be provided, as shown in the drawings, on the under side with a suitable lug for clamping it into a vise. Secured to the top of the bed A are the two parallel cheeks B, within which the slide or carriage C is adapted to have a reciprocating motion imparted thereto by the operator by means of the lever y, which is pivoted at the top of the carriage at a and at its free end at b to alink, D, which in turn is pivoted at c to one of the cheeks B. Rising from this carriage C, and forming an integral part therewith, is the standard E, to the upper end of which is pivotally secured by means of the pivot-screws d d the swinging cutter-bench F.

G is acircular gear-cutter carried ona mandrel, H, between the adjustable horizontal centers e e.

l is a set-screw passing through the cutterbench, and by impinging against the bed A limits the swing ofthe bench F onits pivots dd.

J is a slotted are secured to the under side of the Cutterbench, whereby the latter, by means of the set-screw K passing through the slot therein into the standard E,can be rmly held in any desired relative position to the bed. Motion is given to the cutter by means of the grooved pulley L, which derives its motion from the hand-wheel M by means of a cord,N,passingfrom the hand-wheel M around the pulley L and over another pulley, O,jn the well-known manner. The pulleys M and 0 are adjustably secured upon suitable brackets fastened to the bed ofthe machine. This arrangement for imparting motion to the cutter gives to the pulley L entire freedom to partake of a reciprocating motion of the carriage withoutinterfering with the free rotation of the parts. A

Pis an overhanging standard rising from the bed ot' the machine. The overhanging head g thereof is provided with a vertical bore, in which the vertically-adjustable centering-spindle It snugly fits, and can be held in any desired position therein by. a set-screw, h.

S is a threaded barrel, vertically screwed through the bed of the machine, and terminatineg at .its upper end iu a flange, z', which contains holes k upon its face for the purpose ot' allowing the barrel to be easily screwed up or down for the purposes hereinafter described. This barrel S is open at both ends, and its cylindrical bore conically enlarges at its upper end.

T is a hollow spindle, fitting snugly into the bore of the barrel. Its upper end is conically enlarged to fit the conical enlargement of the bore ot' theharrel, and terminates in the head l, provided with the set-screw m.

U is a .thimble, removably fitted upon the headl of the spindle T, and its bore corresponds with the bore of the latter. The spindle T projects below the barrel S and forms a shoulder or offset at n, against which the divisor-plate Vis seated, and trml y held thereon by the thumb-screw o, screwed upon the threaded lower end of the spindle, so that if the divisor-plate is rotated the spindle T and thimble U have to follow in thismovement. The vertical displacement of the spindle T is prevented by the collar p and nut g.

W is a spring-arm, pivotally secured by a thu mb-screW, r, to the bed ofthe machine, and

IOO

carries near its free end the screw stop-piu s,

adapted to engage into the division-marks of the divisor-plate, which is of the usual construction.

Y is a centering-spindle entered into the bore ofthe spindle T, into which it snugly fits from below. It is provided with the head t, and its upper end may be variously formed, either with a screw-socket, as in Fig. 5, or pointed, as in Fig. 6,01` otherwise, as the requirements ol' the werk to beheld thereon suggest, the same considerations governing also the form of the lower end of the upper centering-spindle, R. rl`hc axial line of both centering-spindles It and Y have to correspond eX- actly.

Z and Z are the usual gages, attached to lthe machine on any convenient and suitable place, one being for gaging the position of the work, the other the position of the cutter.

In practice, if it is desired to cut a gear, the blank is secured upon the top ot the thimble U, of which various assorted sizes have to be kept on hand to choose the most suitable one adapted to give as large a support as possible without interfering with the work. For securing the work upon the thimble U, the centering-spindle Y is always used as the main point of departure. lu Figs. 1, 5, and 6 are shown three typical modes of fastening such work. In the latter mode the upperand lower centering-spiinllcs are brought into use. Now by means ot' the gages the work andthe cutter are put in proper relative position, the threaded barrel S allowing the work to be raised or lowered to the proper height; or, if preferred, the cutter-bench F may be raised or lowered and held in theproper position for work by means ofthe set-screw K. Now, it' motion is given tothe parts and the carriage C advanced by means of thc lever y, the cutter is enabled to perform its work. The forward movement ofthe carriage is limited by the setscrew a, whereby the depth of the gear is controlled. After each cutting the carriage is retracted, the divisorplate turned one notch, and the operation of cutting repeated. By reason of the construction and arrangement of the parts the blank has to rotate in the same degree as the divisorplate. For cutting a crown-gear whccl, the cutter is brought in proper position right over the work, with the set-screw K loosened so as to allow the workman to operate the cutter-bench with the hand, lowering it to cut and raising it to allow the work to be rotated by the divisor-plate, andthe depth of the gear is controlled by the set-screw I. The adjustability of the barrel S in this kind of work is very desirable, and often necessary. For recuttiug a gear-wheel, the same is placed upon the thimble U and centered by means of the tapering end of the upper spindle, R, without, however, depriving it of the facility to rotate freely thereon, as in such cases the use of the divisor-plate is dispensed with, a proper guide in the cutter rotating the wheel as the work progresses.

I abstain from giving a more extended description of the scope of the machine for cutting and recutting, as the typical examples shown in the drawings will suggest to the workman in each case the proper way to chuck his work for operation.

It will be observed that in my machine I dispense entirely with thc use of complicated chucks, using only vertical adjustable centering-spindles, which, with simple additionsdevised by the workman himself, will enable him to perform a large variety of work.

lt will be easily understood that if the cutter-bench Fwould form an integral part ot' the standard E the range of the work the machine is able to perform would be but little restricted thereby, although its adjustment for dit'erent work would require more time and care.

That I claim as my invention is- '1. Thecombinationof the threaded barrel S, conically enlarged at its upper end, the spindle T, provided with a corresponding conical enlargement and head, l, the collarp,and screwnut q, divisor-plate V, spring-arm \V, andthimble U, when combined in the manner described to form a vertical adjustable rotary support, substantially for the purpose specilied.

2. In awatch-gear-cuttingmachine,thecombnation of a stationary' support, reciprocating carriage C, swinging cutter-bench F, slotted arc J, and set-screw K, all combined Vand operated in the manner described and shown.

3. The combination of the bed A, checks carriage C, lever y, link D, cutter-carrying bench F, stop-screw u, and stationary support, all combined and operated in the manner described and shown.

4. In a watch-gearcutting machine, the combination ot' the hand-wheel M, pulleys L and O, cord N, swinging cutter-bench F, mandrel H, and gear-cutter, when combined and operating as and for the purposes specified.

F. EUGENE JEANJAQUET.

Witnesses:

J. PAUL Marea, A. BARTHEL.

IOO

IOS 

